# Mathematics | Surface Areas and Volumes | Assessments and documents (Geometry)

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Surface Area: It is the sum of total exposed area of a three dimensional solid object. Its unit can be in the form cm2, m2 etc.
Volume: It is the amount of space occupied by an object. Its unit can be cm3, m3, etc.
A cuboid is the solid shape which has six rectangle faces at right angles to each other
A cube is a special form of cuboid which is bounded by six equal square faces.
Right Circular Cylinder: A solid obtained by revolving a rectangular lamina about one of its sides, is called as Right Circular Cylinder.
Sphere: A solid obtained by revolving a circular lamina about any of its diameter is called a sphere.
We can also define it as, “The set of all points in space which are equidistant from a fixed point.”
Hemisphere: A plane passing through the center of a sphere divides sphere into two equal parts. Each part is called a hemisphere.
In real life we come across different objects which are a combination of many shapes like cube cuboid, cylinder, sphere, cone etc. In our previous topics we have seen how to find the areas and volumes of simple objects. Now we will look at a few examples on how to find the areas and volumes of combination of solids.

This Booklet explains:
1. Cube, Cuboid and Cylinder
2. Cone and Frustum
3. Sphere and Hemisphere
4. Combination of solids

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22 pages
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